http://www.orpha.net/data/patho/Pro/fr/Urgences_Ehlers-DanlosTypeIV-frPro4042.pdf http://www.orpha.net/consor/cgi-bin/OC_Exp.php?Lng=FR&Expert=286 2017 true France French ehlers-danlos syndrome, type 4 emergency treatment practice guideline ehlers-danlos syndrome ehlers-danlos syndrome